noun

1. An area of darkness; a place or region with no light.

2. Something which is opaque rather than translucent.

verb

1. To make, render (more) opaque.

Synonyms: blur, cloud

adjective

1. Neither reflecting nor emitting light.

2. Allowing little light to pass through, not translucent or transparent.

3. Unclear, unintelligible, hard to get or explain the meaning of